Adding tests for meter service.
Change-Id: Ic220fdaa89b421661019f1a6ef23c7b02eef127c
diff --git a/core/api/src/main/java/org/onosproject/net/meter/MeterRequest.java b/core/api/src/main/java/org/onosproject/net/meter/MeterRequest.java
new file mode 100644
index 0000000..fd11ca4
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+++ b/core/api/src/main/java/org/onosproject/net/meter/MeterRequest.java
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.net.meter;
+
+import org.onosproject.core.ApplicationId;
+import org.onosproject.net.DeviceId;
+
+import java.util.Collection;
+import java.util.Optional;
+
+/**
+ * Represents a generalized meter request to be deployed on a device.
+ */
+public interface MeterRequest {
+
+ enum Type {
+ ADD,
+ MODIFY,
+ REMOVE
+ }
+
+ /**
+ * The target device for this meter.
+ *
+ * @return a device id
+ */
+ DeviceId deviceId();
+
+ /**
+ * The id of the application which created this meter.
+ *
+ * @return an application id
+ */
+ ApplicationId appId();
+
+ /**
+ * The unit used within this meter.
+ *
+ * @return the unit
+ */
+ Meter.Unit unit();
+
+ /**
+ * Signals whether this meter applies to bursts only.
+ *
+ * @return a boolean
+ */
+ boolean isBurst();
+
+ /**
+ * The collection of bands to apply on the dataplane.
+ *
+ * @return a collection of bands.
+ */
+ Collection<Band> bands();
+
+ /**
+ * Returns the callback context for this meter.
+ *
+ * @return an optional meter context
+ */
+ Optional<MeterContext> context();
+
+ /**
+ * A meter builder.
+ */
+ interface Builder {
+
+ /**
+ * Assigns the target device for this meter.
+ *
+ * @param deviceId a device id
+ * @return this
+ */
+ Builder forDevice(DeviceId deviceId);
+
+ /**
+ * Assigns the application that built this meter.
+ *
+ * @param appId an application id
+ * @return this
+ */
+ Builder fromApp(ApplicationId appId);
+
+ /**
+ * Assigns the @See Unit to use for this meter.
+ * Defaults to kb/s
+ *
+ * @param unit a unit
+ * @return this
+ */
+ Builder withUnit(Meter.Unit unit);
+
+ /**
+ * Sets this meter as applicable to burst traffic only.
+ * Defaults to false.
+ *
+ * @return this
+ */
+ Builder burst();
+
+ /**
+ * Assigns bands to this meter. There must be at least one band.
+ *
+ * @param bands a collection of bands
+ * @return this
+ */
+ Builder withBands(Collection<Band> bands);
+
+ /**
+ * Assigns an execution context for this meter request.
+ *
+ * @param context a meter context
+ * @return this
+ */
+ Builder withContext(MeterContext context);
+
+ /**
+ * Requests the addition of a meter.
+ *
+ * @return a meter request
+ */
+ MeterRequest add();
+
+ /**
+ * Requests the removal of a meter.
+ *
+ * @return a meter request
+ */
+ MeterRequest remove();
+
+ }
+
+}